Antimicrobial and Barrier Properties of Bovine Gelatin Films Reinforced by Nano TiO2

Subject Areas : Journal of Chemical Health Risks

R. Nassiri ¹ , A. MohammadiNafchi ²

1 - Biopolymer Research Group, Food Science and Technology Division, Agriculture Department, Damghan Branch, Islamic Azad University, Damghan, Semanan, Iran
2 - Biopolymer Research Group, Food Science and Technology Division, Agriculture Department, Damghan Branch, Islamic Azad University, Damghan, Semanan, Iran

Received: 2013-12-07 Accepted : 2018-10-29 Published : 2013-09-01

Keywords: Nanoparticle, Antimicrobial properties, Gelatin film, WVP, Oxygen permeability,

Abstract :

The effects of nano titanium dioxide incorporation were investigated on the water vaporpermeability, oxygen permeability, and antimicrobial properties of bovine gelatin films. The nano TiO2 (TiO2-N) was homogenized by sonication and incorporated into bovine gelatin solutions at different concentrations(e.g. 1, 2, 3, and 5% w/w of dried gelatin). The permeability of the films to water vapor and oxygen wassignificantly decreased by incorporating of low concentration TiO2-N to gelatin solutions. TiO2-N gelatin filmsshowed an excellent antimicrobial activity against Staphylococcus aureus and Escherichia coli. Theseproperties suggest that TiO2-N has the potential as filler in gelatin-based films for using as an active packagingmaterials in pharmaceutical and food packaging industries.

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